Picture of the Day: South Africa's Radio Telescopes in Slow Motion

Photographer Mike Hutchings took this long exposure shot of South Africa's KAT-7 radio telescope array in the Northern Cape, a large, remote province in the country's northwest. The KAT-7 site and another in Australia are under consideration to host the Square Kilometer Array, which will be the world's largest radio telescope when built. A decision on location will be made this year and construction is projected to begin in 2016.